[多选题]xGW(PDSN)割接之前先进行现网各类业务的测试,包括()等主要功能。
Before cutover of the xGW (PDSN), we need to perform various service tests in the existing network, including the following functions: ( ). A.简单IP(包括1x、DO)
simple IP (1X and DO) B.预付费业务
PPC function C.WAP业务
WAP service D.移动IP
Mobile IP